Preprint
Aug 2026
From Counting Objects to Negative Numbers, The Journey to Understanding Why (-)x(-)=+ ?
Why does (-)x(-)=+? Although every student learns this rule, many accept it as a convention rather than as a mathematical necessity. This article develops a conceptual explanation by tracing the evolution of number from counting objects to representing opposites. Beginning with the emergence of numerals, place value, z...
Chandradew Sharma
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